6606656616 has 64 divisors (see below), whose sum is σ = 18972074880. Its totient is φ = 1878024960.

The previous prime is 6606656593. The next prime is 6606656657. The reversal of 6606656616 is 6166566066.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66715 + ... + 132906.

It is an arithmetic number, because the mean of its divisors is an integer number (296438670).

Almost surely, 2^6606656616 is an apocalyptic number.

It is an amenable number.

6606656616 is an abundant number, since it is smaller than the sum of its proper divisors (12365418264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6606656616 is a wasteful number, since it uses less digits than its factorization.

6606656616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199834 (or 199830 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 48.

The square root of 6606656616 is about 81281.3423609625. The cubic root of 6606656616 is about 1876.4078662133.

The spelling of 6606656616 in words is "six billion, six hundred six million, six hundred fifty-six thousand, six hundred sixteen".